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中文摘要：
对湖南湘潭锰矿矿业废弃地营造林的3．5～4．5年生栾树、杜英混交林进行了生物量研究．结果表明：林分密度为3240株／hm^2，栾树单株生物量为1175～1958g，杜英为544～909g；林分生物量为3125～5211．00kg／hm^2，林分净生产量为893．00～2085.48kg／（hm^2·a）．现林木生命力强，生长旺盛，林分生产潜力大，为矿区废弃地的植物修复提供了优良树种．
英文摘要：
The biomass of a 3. 5 to 4.5-year-old Koelreuteria paniculata mixed stand was studied on the abandoned land of a Xiangtan manganese mine. The result shows that the individual biomass in the mixed stand with density of 3 240 trees per hectare varied enormously： 175 to 1 958 g for Koelreuteria paniculata and 544 to 909 g for Elaeocarpus decipensi and that the stand biomass and the net production were 3 125 kg/hm^2 to 5 211.00 kg/hm^2 and 893.00 kg/（hm^2·a） to 2 085. 48 kg/（hm^2 · a） respectively. Now these trees have strong stems and grow healthily with great potentials. Therefore, this tree species was well chosen for the plant remediation of mine abandoned lands.
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